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在现代汉语中,涉及到动物的成语不少。有的是一个成语涉及到几种动物,有的是几个成语都涉及到同一种动物。而某些成语涉及的动物稀少或奇特,有的则因历史文化的嬗变使之变得陌生起来,有的则由于人们认识的深入而改变了原有的意义,从而出现了一些“疑案”。现举例如下:1.“泥”并非是泥土。成语“烂醉如泥”,常被用来形容人喝醉酒后瘫成一团的样子。一般工具书对这一比喻或成语中的“泥”是何物都未深究,不少人也就将其牵强附会认为是泥土、烂泥巴之类。其实这里所说的“泥”并非泥土,而是一种动物。“泥”为何物?唐人沈如筠在他… 相似文献
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日本的进出境动物检疫 总被引:1,自引:0,他引:1
日本是个由北海道、本州、四国、九州四个主要岛屿组成的岛国,因其四面环水,无陆路与他国相通,是动物防疫工作的环境优越型国家;同时,日本又是个经济发达而又资源匮乏的国家,每年须从国外进口大量的农畜产品,这就对进出境动物检疫工作提出了严格要求。日本曾是无口蹄疫、牛瘟和非洲猪瘟等病毒性动物疾病的国家之一,但2000年春季在日本发生了口蹄疫疫情,在日本朝野引起了极大的震动。 为了便于我国企业和检疫人员了解日本的进出境动物检疫概况,促进我国农畜产品的对日出口,兹将日本的进出境动物检疫情况做一综述。1动物检疫… 相似文献
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我国赠送给日本的两只珍稀奇鸟朱鹮,不久将作为两国友好使者东渡扶桑.1998年12月,这对名叫“洋洋”和“友友”.的“小夫妻”,成了人们关注的“焦点”.朱鹮又名朱鹭,是当今世界上一种极为珍稀的鸟,素有“东方宝石”之称.据有关专家介绍,目前在地球上仅存137只,堪称比大熊猫还珍贵的鸟类.令人欣慰的是,在我国境内就有136只,另外一只在日本,被日本视为国鸟.据了解,1960年第十二届世界鸟类保护会议将朱鹮列为“国际保护鸟”,在我国属国家一级保护动物.由于乱砍滥伐、使用农药化肥、工业污染等造成的自然环境的恶化, 相似文献
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北京动物园是中国最大的动物园之一,饲养展出的动物共有500余种6000多只(不包括北京海洋馆的海洋动物),在科技兴园指引下,每年都有100多种、200多只动物繁殖出生。在这些新生的小动物中,总会有几只因为这样或那样的原因成为没有妈妈喂养的“小可怜儿”。为了挽救这些“弃儿”,北京动物园早在八十年代就建立了一座专门收养动物孤儿的动物“托儿所”。 相似文献
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谢帆 《江西畜牧兽医杂志》1986,(2)
<正> 日本的自然环境条件日本群岛是由四个主要岛屿和另一些小岛组成。它的总面积约为377,000平方公里,是一个多山地和丘陵地的国家。除北海道外,日本的大部分地区和西南岛屿都是位于温带季风地区。当夏季来临时,日本正是雨季,有所谓“霉雨”之称,并且持续约一个月之久。由于有大量雨水补给,有利于水稻的栽培;然而 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献
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乳酸杆菌作为益生菌广泛用于人和动物.本文综述了乳酸杆菌改善宿主健康的机制.乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道.文章重点讨论了乳酸杆菌表面成分(表面蛋白、脂磷壁酸和肽聚糖)与肠道受体(C型凝集素受体、Toll样受体和Nod样受体),阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制. 相似文献